TG-Jaw 600 Primary Jaw Crusher

Primary Compression Crushing for Hard Ferrous Scrap

The TG-Jaw 600 is a primary jaw crusher engineered for the first stage of size reduction in metal recycling circuits where feedstock includes hard, dense, or abrasive ferrous materials that exceed the grip and shear capability of shredder-based systems. Cast iron engine blocks, heavy steel sections, railway components, and large machinery castings arrive at recycling yards in sizes and hardness levels that can stall twin-shaft shredders or cause excessive wear on cutting discs. The jaw crusher addresses this by applying compressive force between a fixed jaw plate and a movable jaw plate, both lined with manganese steel, to fracture hard metal through direct compression rather than tearing or shearing.

Key Specifications

The 600 × 900 mm feed opening sets the maximum input size the machine can accept in a single piece. Material larger than the opening requires pre-shearing or thermal cutting before feeding. The discharge setting is adjusted via a hydraulic wedge mechanism, allowing the operator to change output fragment size without manually shimming the jaw gap—a significant advantage over mechanical shim adjustment when the yard processes varying feedstock that requires different output sizes through the day.

Why Compression Crushing for Hard Metal

Shredders reduce metal through shearing and tearing between rotating shafts. This works well for light-gauge sheet, auto bodies, and mixed light scrap. But when the feed stream includes dense castings, thick-walled sections, or hardened steel components, shredder cutting tools experience accelerated wear, rotor stalling, and in some cases catastrophic tool breakage. The jaw crusher solves this by applying steady compressive force—the material fractures along its natural cleavage planes under compression, rather than being gripped and torn.

The eccentric shaft drives the movable jaw in an elliptical motion. Material entering the crushing chamber is compressed between the two jaw plates and fractures when the compressive stress exceeds the material's tensile strength. The fragmented pieces fall by gravity through the discharge opening as the jaw retreats on the return stroke. This batch-fed, cyclic action differs from the continuous through-flow of a shredder and is better matched to large, individual pieces that need controlled fragmentation.

Jaw Plate Selection and Wear Management

Manganese steel (Mn13 and Mn18 grades) is the standard liner material for metal recycling jaw crushers. Manganese work-hardens under impact—its surface hardness increases as it is struck by feed material, creating a wear-resistant layer while maintaining a tough, crack-resistant core. Mn18 is specified for harder, more abrasive feed streams where Mn13 would wear through faster.

• Standard jaw plates: Mn13 manganese steel, reversible to extend service life
• Heavy-duty jaw plates: Mn18 manganese steel for abrasive cast iron and hardened steel
• Corrugated profile: improves grip on rounded castings and cylindrical sections
• Flat profile: produces more uniform output fragment size

Jaw plates are bolted to the frame and swing jaw for replacement without welding. Track wear by measuring plate thickness at scheduled intervals and replace before the corrugations flatten—running with worn plates reduces crushing efficiency and increases motor load.

Application Scope

The TG-Jaw 600 is designed for primary size reduction of:

• Cast iron engine blocks and machinery housings
• Thick-walled steel pipe and structural sections
• Railway track components and rail sections
• Large steel castings and forgings
• Hardened steel shafts and axles

The machine is positioned as the first stage in a multi-stage recycling line. Oversized output from the jaw crusher can be fed to a secondary crusher (impact or cone) for further reduction, or to a shredder for final sizing. The jaw crusher is not designed for light-gauge sheet metal or loose mixed scrap—these materials do not compress and fracture effectively between jaw plates and are better handled by a shredder directly.

Drive and Electrical Configuration

The main motor drives the eccentric shaft via V-belt and flywheel. The flywheel stores energy during the idle portion of the jaw cycle and releases it during the compression stroke, reducing peak motor load and allowing a smaller motor to handle large feed pieces. Motors are available in 50 Hz or 60 Hz configuration. The control panel includes motor protection, amperage monitoring, and emergency stop circuits.

Compliance and Certification

The machine frame and guarding carry CE marking per the Machinery Directive for European facility installation. The manufacturing facility operates under ISO 9001 quality management. UL-listed control panel configuration is available for North American buyers on request. Interlocked safety guards prevent access to the crushing chamber and drive components during operation.

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